Communications of the ACM
Flip-Flop Qubits: Radical New Quantum Design Invented
University of New South Wales engineers have invented a radical new architecture for quantum computing based on novel 'flip-flop qubits'.
Credit: Guilherme Tosi
Researchers at the University of New South Wales (UNSW) in Australia have created a new quantum computing architecture based on "flip-flop quantum bits (qubits)," which they say could ease the large-scale manufacture of quantum chips.
The new chip design permits a silicon quantum processor to be scaled up without the precise placement of atoms required in other methods, while also enabling the positioning of qubits hundreds of nanometers apart and maintaining entanglement.
"What...the team has invented is a new way to define a 'spin qubit' that uses both the electron and the nucleus of the atom," says UNSW professor Andrea Morello. "Crucially, this new qubit can be controlled using electric signals, instead of magnetic ones. Electric signals are significantly easier to distribute and localize within an electronic chip."
Morello says the new design is "easier to fabricate than atomic-scale devices, but still allows us to place a million qubits on a square millimeter."
From UNSW Newsroom
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